High-power-density new energy grid-connected performance test circuit

The invention discloses a high power density new energy grid-connected performance test circuit, and the key points of the technical scheme are that the circuit comprises an input end and an output end, the input end is electrically connected with an input switch cabinet, the input switch cabinet is electrically connected with a step-down transformer T1, one side of the step-down transformer T1 is electrically connected with a multi-split transformer T2, and the other side of the step-down transformer T1 is electrically connected with a multi-split transformer T2. One side of the multi-split transformer T2 is electrically connected with a power box, one side of the power box is electrically connected with a boosting transformer T3, one side of the boosting transformer T3 is electrically connected with an output switch cabinet, and one side of the output switch cabinet is electrically connected with the output end. A bypass switch cabinet is electrically connected between the input end and the output end. The